While he was primarily a Director, Wellman also produced ten films, one of them uncredited, all of which he also directed. His last film was Lafayette Escadrille (1958), which he produced, directed, wrote the story for and narrated. He wrote the screenplay for two other films that he directed, and one film that he did not direct, 1936's The Last Gangster. He also wrote the story for A Star Is Born and received a story credit for both remakes in 1954 and 1976.